CN107200682A - A kind of improved Formaldehyde Production system - Google Patents
A kind of improved Formaldehyde Production system Download PDFInfo
- Publication number
- CN107200682A CN107200682A CN201710567083.6A CN201710567083A CN107200682A CN 107200682 A CN107200682 A CN 107200682A CN 201710567083 A CN201710567083 A CN 201710567083A CN 107200682 A CN107200682 A CN 107200682A
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- gas
- air
- oxidator
- heater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000010521 absorption reaction Methods 0.000 claims abstract description 47
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 13
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 5
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 4
- 239000000945 filler Substances 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007616 round robin method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/37—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of >C—O—functional groups to >C=O groups
- C07C45/38—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of >C—O—functional groups to >C=O groups being a primary hydroxyl group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/783—Separation; Purification; Stabilisation; Use of additives by gas-liquid treatment, e.g. by gas-liquid absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention provides a kind of improved Formaldehyde Production system, including an air blower, the heater of a preheated air, one are used for mix steam, the material mixer of methanol steam and air, a silver-colored oxidator for catalytic reaction of progress formaldehyde, the first absorption tower for absorbing formaldehyde gas and second absorption tower, gas-liquid separator；Air is blasted the heater by the air blower from below, the gas outlet of heater connects the air inlet of the material mixer, material mixer discharging opening connects the charging aperture above the oxidator, discharging opening connection described first below oxidator absorbs the charging aperture of tower bottom, first discharging opening absorbed at the top of top gas outlet connection second absorption tower bottom air inlet, second absorption tower connects the charging aperture of the gas-liquid separator bottom.The system carries out circulation of tail gas without using tail gas Roots blower and its appurtenances, saves equipment cost, reduces energy consumption, further reduces risk of equipment damage, improves safety in production coefficient.
Description
Technical field
The present invention relates to chemical production field, and in particular to a kind of improved Formaldehyde Production system.
Background technology
At present in the production practices of high-concentration industrial formaldehyde, silver-colored catalytic exhaust round-robin method is highly developed, is also mesh
The preceding production technology most generally used.Circulation of tail gas method replaces reducing by 70% dispensing steam by tail gas, to take away unnecessary methanol
Oxidation reaction heat, its technique is to add tail gas, reduces dispensing steam, and tower adds water constant, does not increase the moisture into system, reaches
To the purpose of production high-concentration formaldehyde.
However, 90KW Roots blowers 2140 degree of the power consumption in 24 hours of operating commonly used in existing exhaust system, 1 year by life
Production calculates 64.2 ten thousand degree of power consumption in 300 days；Slave unit purchase installs the methods such as maintenance and energy consumption and brings huge cost.
If moreover, existing exhaust system stop jumping in rainy thunder can bring potential safety hazard：Tail gas is not joined in production
Plus reaction, but can take away heat of reaction, once air blower 10 is stopped because of a variety of causes, the heat that oxidation reaction is produced not by
Take away, it will cause serious oxidation overheating problem, directly result in and completely stop；Stop, can be brought greatly caused by overtemperature
Potential safety hazard, normal production reaction temperature, if overtemperature again, just reaches the fusing point limit of silver catalyst, very at 645 DEG C or so
Catalyst and production equipment are easily burnt, loss is very big.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of improved Formaldehyde Production system, overcome prior art
Defect, while high concentration can be produced（40%-55%）Formalin.
The technical problems to be solved by the invention are achieved by the following technical programs：
A kind of improved Formaldehyde Production system, including an air blower, the heater of a preheated air, one are used for mix and steamed
Vapour, the material mixer of methanol steam and air, one carry out the oxidator of the silver-colored catalytic reaction of formaldehyde, for absorbing formaldehyde gas
First absorption tower and second absorption tower, gas-liquid separator；The air blower is connected with the air inlet of heater, the outlet of heater
Below charging aperture above the air inlet of mouth connection material mixer, the discharging opening connection oxidator of material mixer, oxidator
Discharging opening connection first absorb tower bottom charging aperture, first absorb top gas outlet connection second absorption tower bottom inflow
Mouthful, the air inlet of the gas outlet connection gas-liquid separator bottom at the top of second absorption tower；Wherein, the first absorption tower and second absorbs
Tower has a heat exchanger, and the ratio between heat exchanger area of the first absorption tower and second absorption tower is 1.8-1.5：1, second absorption tower top
Also there is the filler of formulated product concentration.
As a further improvement on the present invention, the heat exchanger area of the first described absorption tower and second absorption tower is respectively
360m2 and 220m2.
As a further improvement on the present invention, exhaust gas treating device is removed in described gas-liquid separator top exit connection one.
As a further improvement on the present invention, the air blower, the gas outlet of heater, the air inlet of material mixer,
Discharging opening, the charging of the first absorption tower bottom below charging aperture above material mixer discharging opening, oxidator, oxidator
Mouthful, first absorbs top gas outlet, second absorption tower bottom air inlet, the gas outlet at the top of second absorption tower, gas-liquid separator
The charging aperture of bottom, gas-liquid separator top exit and exhaust gas treating device is gone to be attached from each other by pipeline.
As a further improvement on the present invention, it is respectively arranged with valve on described pipeline.
The beneficial effects of the invention are as follows：
Former technique obtains high-concentration formaldehyde by reducing the use of dispensing water vapour.And this improved Formaldehyde Production system is selected
Rational first absorption tower heat exchanger area and second absorption tower heat exchanger area, scientifically improve absorption tower heat exchange efficiency,
Compared with former technique, a large amount of amount of water for reducing filler at second absorption tower tower tops, maintain the usage amount of dispensing water vapour without
Tail gas is needed to take away heat of reaction, production formaldehyde amount is constant, and solution is reduced, and has reached the requirement of production high concentration product.Therefore, nothing
Tail gas Roots blower and its appurtenances need to be used to carry out circulation of tail gas, without adding extras, equipment cost, drop is saved
Low energy consumption, further reduces risk of equipment damage, improves safety in production coefficient.
Brief description of the drawings
Fig. 1 is a kind of structural representation of improved Formaldehyde Production system of the present invention.
Embodiment
The present invention is further described for explanation and embodiment below in conjunction with the accompanying drawings.
Drawing reference numeral in Fig. 1 is：Air blower 1, heater 2, material mixer 3, oxidator 4, the first absorption tower 5, the
Two absorption towers 6, gas-liquid separator 7 removes exhaust gas treating device 8, filler 9.
As shown in figure 1, a kind of improved Formaldehyde Production system, each several part of system is connected by the pipeline with valve
Logical, air blower 1 is connected with the air inlet of heater 2, and air is blasted heater 2, the outlet of heater 2 by air blower 1 from below
Under the air inlet of mouth connection material mixer 3, the charging aperture of the top of the discharging opening of material mixer 3 connection oxidator 4, oxidator 4
The discharging opening of side connects the charging aperture of the bottom of the first absorption tower 5, the top gas outlet of the first absorption tower 5 connection second absorption tower 6 bottom
The air inlet of 6 gas outlet connection gas-liquid separator 7 bottom at the top of portion's air inlet, second absorption tower, the top of gas-liquid separator 7 goes out
Exhaust gas treating device 8 is removed in mouth connection one；
Wherein, the first absorption tower heat exchanger area is 360m2, and second absorption tower sheet heat exchanger area is 220m2, second absorption tower
Top also has filler 9, for formulated product formalin concentration.
A kind of improved Formaldehyde Production system that can be provided by the present invention carries out following production formaldehyde technique：
Air is blasted heater 2 by air blower 1, and the preheated air of heater 2 simultaneously delivers air to material mixer 3, and raw material is mixed
Clutch 3 receives air, methanol steam and dispensing steam and is mixed and is transported to oxidator 4, and oxidator 4 carries out catalytic reaction oxygen
Change methanol and obtain formaldehyde gas, the formaldehyde gas that oxidator 4 comes out initially enters in the first absorption tower 5 and carries out absorption operation, first
Aldehyde solution finished product is produced by the first absorption tower 5, is absorbed and is added with supplement process water by the tower top of second absorption tower 6, unabsorbed
Formaldehyde tail gas is sent into after the separation water of gas-liquid separator 7 by the tower top gas outlet of second absorption tower 6 and removes exhaust gas treating device 8.Using
The system produces formaldehyde, in the case where meeting the existing production capacity of my company, monthly saves about 60,000 degree of electricity.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (5)
1. a kind of improved Formaldehyde Production system, it is characterised in that including an air blower, the heater of a preheated air, one use
Material mixer in mix steam, methanol steam and air, one carry out the oxidator of the silver-colored catalytic reaction of formaldehyde, for inhaling
Receive the first absorption tower and second absorption tower, the gas-liquid separator of formaldehyde gas；The air blower is connected with the air inlet of heater,
The gas outlet of heater connects the charging above the air inlet of material mixer, the discharging opening connection oxidator of material mixer
Mouthful, the discharging opening connection first below oxidator absorbs the charging aperture of tower bottom, and first, which absorbs top gas outlet connection second, inhales
Receive the air inlet of the gas outlet connection gas-liquid separator bottom at the top of tower bottom air inlet, second absorption tower；First absorption tower and
Second absorption tower has a heat exchanger, and the ratio between heat exchanger area of the first absorption tower and second absorption tower is 1.8-1.5：1, second inhales
Receiving top of tower also has filler.
2. improved Formaldehyde Production system according to claim 1, it is characterised in that the first described absorption tower and second
The heat exchanger area on absorption tower is respectively 360m2 and 220m2.
3. improved Formaldehyde Production system according to claim 2, it is characterised in that go out at the top of described gas-liquid separator
Exhaust gas treating device is removed in mouth connection one.
4. improved Formaldehyde Production system according to claim 3, it is characterised in that the air blower, heater go out
Discharging below charging aperture above the air inlet of gas port, material mixer, material mixer discharging opening, oxidator, oxidator
The charging aperture of mouth, the first absorption tower bottom, first absorbs top gas outlet, second absorption tower bottom air inlet, second absorption tower
The gas outlet at top, the charging aperture of gas-liquid separator bottom, gas-liquid separator top exit and remove exhaust gas treating device from each other
Connected by pipeline.
5. improved Formaldehyde Production system according to claim 4, it is characterised in that be respectively arranged with valve on described pipeline
Door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567083.6A CN107200682A (en) | 2017-07-12 | 2017-07-12 | A kind of improved Formaldehyde Production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567083.6A CN107200682A (en) | 2017-07-12 | 2017-07-12 | A kind of improved Formaldehyde Production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107200682A true CN107200682A (en) | 2017-09-26 |
Family
ID=59910823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710567083.6A Pending CN107200682A (en) | 2017-07-12 | 2017-07-12 | A kind of improved Formaldehyde Production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107200682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905527A (en) * | 2020-07-07 | 2020-11-10 | 山西钢科碳材料有限公司 | Exhaust gas treatment system and treatment method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024603A (en) * | 2007-03-29 | 2007-08-29 | 永港伟方(北京)科技有限公司 | Methanal absorbing system |
| CN201305565Y (en) * | 2008-09-24 | 2009-09-09 | 江阴市华燕石化机械装备有限公司 | Device for preparing formaldehyde by exhaust gas circulation process |
| CN104610031A (en) * | 2014-12-31 | 2015-05-13 | 湖北沙隆达股份有限公司 | Production method of high-concentration formaldehyde |
| CN105294414A (en) * | 2015-11-19 | 2016-02-03 | 安徽中源化工有限公司 | Formaldehyde production system |
| CN106083541A (en) * | 2016-06-03 | 2016-11-09 | 滁州市龙飞化工有限公司 | A kind of method utilizing silver catalytic oxidation to prepare formaldehyde |
-
2017
- 2017-07-12 CN CN201710567083.6A patent/CN107200682A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024603A (en) * | 2007-03-29 | 2007-08-29 | 永港伟方(北京)科技有限公司 | Methanal absorbing system |
| CN201305565Y (en) * | 2008-09-24 | 2009-09-09 | 江阴市华燕石化机械装备有限公司 | Device for preparing formaldehyde by exhaust gas circulation process |
| CN104610031A (en) * | 2014-12-31 | 2015-05-13 | 湖北沙隆达股份有限公司 | Production method of high-concentration formaldehyde |
| CN105294414A (en) * | 2015-11-19 | 2016-02-03 | 安徽中源化工有限公司 | Formaldehyde production system |
| CN106083541A (en) * | 2016-06-03 | 2016-11-09 | 滁州市龙飞化工有限公司 | A kind of method utilizing silver catalytic oxidation to prepare formaldehyde |
Non-Patent Citations (1)
| Title |
|---|
| 杨洪彬等: "甲醛生产装置技改总结", 《河南化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905527A (en) * | 2020-07-07 | 2020-11-10 | 山西钢科碳材料有限公司 | Exhaust gas treatment system and treatment method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170926 |